Question

Calculati:
a) 3,(3) + 1,(3) x 1/3 - 4: 9/2 =
b) 12,(3) x 2,25 - 5 inmultit cu 1/2 : 4 inmultit cu 2/5=
DAU COROANA + 20 DE PUNCTE!

Answer 1

a) 3,(3) + 1,(3) x 1/3 - 4 : 9/2 = 30/9 + 12/9 x 1/3 - 4/1 x 2/9 = 30/9 + 12/27 - 8/9 = 30/9 + 4/9 - 8/9 = 34/9 - 8/9 = 26/9
b) 12,(3) x 2,25 - 5 x 1/2 : 4 x 2/5 = 111/9 x 225/100 - 5/2 x 1/4 x 2/5 = 37/3 x 9/4 - 5/8 x 2/5 = 333/12 - 10/40 = 111/4 - 10/40 = 1110/40 - 10/40 = 1100/40